Owner's manual

MAX5487/MAX5488/MAX5489
Dual, 256-Tap, Nonvolatile, SPI-Interface,
Linear-Taper Digital Potentiometers
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
V
DD
to GND...........................................................-0.3V to +6.0V
All Other Pins
to GND......................-0.3V to the lower of (V
DD
+ 0.3V) and +6.0V
Maximum Continuous Current into H_, W_, and L_
MAX5487......................................................................±5.0mA
MAX5488......................................................................±1.3mA
MAX5489......................................................................±0.6mA
Continuous Power Dissipation (T
A
= +70°C)
16-Pin Thin QFN (derate 17.5mW/°C above +70°C).....1398mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-60°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
DC ELECTRICAL CHARACTERISTICS
(V
DD
= +2.7V to +5.25V, V
H
= V
DD
, V
L
= GND, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at V
DD
= +5.0V,
T
A
= +25°C, unless otherwise noted.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX
UNITS
DC PERFORMANCE (Voltage-Divider Mode, Figure 1)
Resolution N
256
Taps
Integral Nonlinearity INL (Note 2) ±1
LSB
Differential Nonlinearity DNL (Note 2)
±0.5
LSB
Dual-Code Matching Register A = register B 2
LSB
End-To-End Resistor Tempco TC
R
35
ppm/°C
Ratiometric Resistor Tempco 5
ppm/°C
MAX5488
-0.6 +1.2
Full-Scale Error
MAX5489
-0.3 +1.2
LSB
MAX5488 0.6 1.5
Zero-Scale Error
MAX5489 0.3 1
LSB
DC PERFORMANCE (Variable-Resistor Mode, Figure 1)
Resolution
256
Taps
V
DD
= 5.0V
±1.5
Integral Nonlinearity (Note 3) MAX5488/MAX5489
V
DD
= 3.0V ±3
V
DD
= 5.0V ±1
Differential Nonlinearity (Note 3) MAX5488/MAX5489
V
DD
= 3.0V ±1
LSB
DC PERFORMANCE (Resistor Characteristics)
V
DD
= 5.0V
200
350
Wiper Resistance (Note 4) R
W
V
DD
= 3.0V
325
675
Ω
Wiper Capacitance C
W
50 pF
MAX5487 7.5 10
12.5
MAX5488
37.5
50
62.5
End-to-End Resistance R
HL
MAX5489 75
100
125
kΩ